CVE-2021-3135: An issue was discovered in the tagDiv Newspaper theme 10.3.9.1 for WordPress

Routine

MEDIUM 6.1DOWNGRADE

CVE-2021-3135 is a medium-severity flaw (CVSS 6.1) affecting newspaper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the tagDiv Newspaper theme 10.3.9.1 for WordPress. It allows XSS via the wp-admin/admin-ajax.php td_block_id parameter in a td_ajax_block API call.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-07-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tagdiv

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-19 21:15 UTCPublished CVE record published
2026-06-17 04:04 UTCUpdated Record last modified

tagdiv newspaper DOWNGRADE

Affected: 10.3.9.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.3.9.1

1. Check installed version

apt-cache policy newspaper || rpm -q newspaper || newspaper --version

2. No fixed release: DOWNGRADE to a release before 10.3.9.1 (Debian / Ubuntu)

apt-cache madison newspaper sudo apt install newspaper=<VERSION_BEFORE_10.3.9.1> sudo apt-mark hold newspaper

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list newspaper sudo dnf downgrade newspaper-<VERSION_BEFORE_10.3.9.1> sudo dnf versionlock add newspaper

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-3135?

newspaper: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-3135 being exploited?

CVE-2021-3135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-3135 affect?

CVE-2021-3135 affects newspaper. Severity is medium (CVSS 6.1). An issue was discovered in the tagDiv Newspaper theme 10.3.9.1 for WordPress. It allows XSS via the wp-admin/admin-ajax.php td_block_id parameter in a td_ajax_block API call.

How urgent is CVE-2021-3135?

Priority 36/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

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CVE-2022-3477 CRITICAL 9.8 UPGRADE UPGRADE The tagDiv Composer WordPress plugin before 3.5, required by the Newspaper WordPress theme before 12.1 and New
CVE-2022-2627 MEDIUM 6.1 UPGRADE The Newspaper WordPress theme before 12 does not sanitise a parameter before outputting it back in an HTML att
CVE-2022-2167 MEDIUM 6.1 UPGRADE The Newspaper WordPress theme before 12 does not sanitise a parameter before outputting it back in an HTML att
CVE-2017-18634 CRITICAL 9.8 UPGRADE The newspaper theme before 6.7.2 for WordPress has script injection via td_ads[header] to admin-ajax.php.

References

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